HLN might wanna reconsider moving “The Joy Behar Show” back to its old 9 p.m. perch after less-than-stellar ratings for “Dr. Drew,” which hemorrhaged half of its opening-night audience in its second go-round Tuesday night.

The Drew Pinsky-hosted talker, which pulled in 401,000 viewers in its Monday-night premiere, lost a whopping 200,00 viewers in Night Two, when it averaged 201,000 total viewers (and only 84,000 viewers in adults 25-54). For a prime-time show on broadcast TV, this would be cause for concern, but not outright alarm — on a niche cable network like HLN, it’s not good any way you slice it.

Pinsky’s second night was even less than what “Nancy Grace: America’s Missing” was averaging at 9 p.m. as a placeholder for “Dr. Drew,” once “Joy Behar” was moved to 10 to make room for the good doctor.

Oy.

In other ratings news, the second night (and Parts 2 and 3) of “The Kennedys” also shed a boatload of viewers, pulling in 841,000 viewers on Reelz after the miniseries premiered to 1.9 million viewers Sunday night.

The syndicated “TMZ,” meanwhile, cracked the top last month in adults 18-49.

* * *

Al Roker’s production company, Roker Shorts, has produced three public service announcements for Nickeloden’s kiddie audience, focusing on the recent earthquake/tsunami in Northern Japan. Roker himself appears in all three PSAs, airing on Nickelodeon, TeenNick, Nicktoons and nick.com. The spots explain the earthquake and tsunami using computer-generated illustrations, with viewers directed to Nick’s site, The Big Help, to learn more.

* * *

Time Out Chicago media columnist Robert Feder reports that Amy Freeze is joining Ch. 7 as a weekend meteorologist — and, yes, it’s her real name. Freeze, 36, was let go by ChiTown’s Fox affiliate, WFLD, after four years as the station’s chief meteorologist. As Feder reports, Freeze will be reunited at Ch. 7 with another WFLD alum, David Novarro, who joined Ch. 7 last December.